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#ifndef MYPAINTSURFACE_H
#define MYPAINTSURFACE_H

/* libmypaint - The MyPaint Brush Library
 * Copyright (C) 2008 Martin Renold <martinxyz@gmx.ch>
 * Copyright (C) 2012 Jon Nordby <jononor@gmail.com>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <mypaint-config.h>
#include <mypaint-rectangle.h>

G_BEGIN_DECLS

typedef struct MyPaintSurface MyPaintSurface;

typedef void (*MyPaintSurfaceGetColorFunction) (MyPaintSurface *self,
                                                float x, float y,
                                                float radius,
                                                float * color_r, float * color_g, float * color_b, float * color_a
                                                );
typedef int (*MyPaintSurfaceDrawDabFunction) (MyPaintSurface *self,
                       float x, float y,
                       float radius,
                       float color_r, float color_g, float color_b,
                       float opaque, float hardness,
                       float alpha_eraser,
                       float aspect_ratio, float angle,
                       float lock_alpha,
                       float colorize);

typedef void (*MyPaintSurfaceDestroyFunction) (MyPaintSurface *self);

typedef void (*MyPaintSurfaceSavePngFunction) (MyPaintSurface *self, const char *path, int x, int y, int width, int height);

typedef void (*MyPaintSurfaceBeginAtomicFunction) (MyPaintSurface *self);

typedef void (*MyPaintSurfaceEndAtomicFunction) (MyPaintSurface *self, MyPaintRectangle *roi);

/**
  * MyPaintSurface:
  *
  * Abstract surface type for the MyPaint brush engine. The surface interface
  * lets the brush engine specify dabs to render, and to pick color.
  */
struct MyPaintSurface {
    MyPaintSurfaceDrawDabFunction draw_dab;
    MyPaintSurfaceGetColorFunction get_color;
    MyPaintSurfaceBeginAtomicFunction begin_atomic;
    MyPaintSurfaceEndAtomicFunction end_atomic;
    MyPaintSurfaceDestroyFunction destroy;
    MyPaintSurfaceSavePngFunction save_png;
    int refcount;
};

/**
  * mypaint_surface_draw_dab:
  *
  * Draw a dab onto the surface.
  */
int
mypaint_surface_draw_dab(MyPaintSurface *self,
                       float x, float y,
                       float radius,
                       float color_r, float color_g, float color_b,
                       float opaque, float hardness,
                       float alpha_eraser,
                       float aspect_ratio, float angle,
                       float lock_alpha,
                       float colorize
                       );


void
mypaint_surface_get_color(MyPaintSurface *self,
                        float x, float y,
                        float radius,
                        float * color_r, float * color_g, float * color_b, float * color_a
                        );

float
mypaint_surface_get_alpha (MyPaintSurface *self, float x, float y, float radius);

void
mypaint_surface_save_png(MyPaintSurface *self, const char *path, int x, int y, int width, int height);

void mypaint_surface_begin_atomic(MyPaintSurface *self);

void mypaint_surface_end_atomic(MyPaintSurface *self, MyPaintRectangle *roi);

void mypaint_surface_init(MyPaintSurface *self);
void mypaint_surface_ref(MyPaintSurface *self);
void mypaint_surface_unref(MyPaintSurface *self);

G_END_DECLS

#endif // MYPAINTSURFACE_H